Concrete pipe



Feb. 10. 1925. 1,526,088

E. 1.. PETERSON CONCRETE PIPE Filed Aug. 24, 1920 3 Sheets-Sheet l INVENTOR Elk-I L. i a Tal'sm-w.

ATTORNEY s Feb. 10. 1925.

E. PETERSON CONCRETE PIPE w n 89 A93 95 2& INVENTOR Elk"! Ln FETEFSIH.

ATTOR N EYJ Feb. 10. 1925.

E. L. PETERSON CONCRETE PIPE 1920 5 Sheets-Sheet 5 Filed Aug. 24

; INVENTOR ink-1 L. FeTevsun.

ATTORNEYS i Patented Feb. 10, 1925.

UNITED STATES PATENT OFFICE.

EARL L. PETERSON, OF CORONA, NEW YORK, ASSIGNOR TO UNITED OONORETE PIPE COMPANY,'.-OF NEW YORK, N. Y.,

A CORPORATION OF DELAWARE.

concnnrn PIPE.

Application filed August 24, 1920. Serial No. 405,702.

To all whom. it may concern:

Be it known. that I, EARL L. PETERSON,

a citizen of the United States of America,

residing at Corona, county of'Queens, Long 'Island, and State of New York, have invented certain new and useful Improvements in Concrete Pipe, of which the following is a specification.

My invention relates to. concrete pipe,-

and particularly to the joint between abut- [ting pipe sections." The object of my invention is to provide a simple and practicable expansion joint, the elements of g which may be readily fabricated and molded into the pipe ends while at the same time ,afi'ording improved efliciency in op eration. The present construction 'is in a measure. related to that shown-in the Scofield Patent 1,346,687, of which it is a .develo ment. Y In t e accompanying drawings- Fig. 1 is a longitudinal section through portions of abutting my invention is embodled inone form.

Fig. '2 is a section on the line 2-2 Figure 1.

Fig. 3 is an end elevation of a portion of the spigot pipe.

Fig. 4 is a similar view of the bell pipe end. w

Figs. 5 tov 15 inclusive, are views similar to Fig. 1', but showing various modified forms of joints.

' The joint shown in Figs. 1 to 4 is special-- 1 adapted to relatively low pressure conci uits. That is to say, conduits through which fluidor gas passes .at a pressure not' exceeding forty or fifty pounds. \As here indicated, the pipe section is provided with a projection spigot flange 21, and'two wire mesh cages 22 and 23 respectively, the former terminating adjacent-the abutment face 24 at the exterior portion of the joint, whilethe' second mesh 23 projects beyond the. terminal face 25 of the spigot flange.

The bell end section 26, which corresponds te the opposite end of the sectionx20, discloses the position of the mes'lfes 22 and 23- at that end of the section. As indicated, the mesh 22 is embedded in the bellflange 27 adjacent the wall 28-thereof, while the mesh 23 is also embedded in the terminal ipe ends in which face 29 at the innerportion of the joint, and preferabl forms'the body of the bead 30 projecting beyond the face 29. The faces 25 and 29 of the pipe ends are spaced apart when the abutting faces 24 and 28 are engaged in the completed joint position, thus affording a' channel 31 at the interior face of the joint, to permit certain jointsealing operations hereinafter referred to, as well as to receive the grout which is trowelled into the channel to' finish the seal of the joint, and to'afford a smooth flowsurface at this point.

In order to render the joint gas and fluid tight, re ardless'of expansion and contraction of t e line undervarying temperature conditions, I embody in the ends of the pipe sections, a pair of sheet metal rings 32 and 33. The ring 32 which is embedded in the spigot pipe end is shaped as a truncated.

double cone, one-portion of which is embedded in thebody of the pipe and is provided with any suitable. anchorage device, such as apertures 34, while the other portion thereof overlies the spigot flange 21 of the pipe, and rests thereon. At the junction of the two oppositely inclined portions of the ring32, it is crimped at 35, and a water proofplastic or fibrous packing .36 rests t erein. Thecrimp 35 and consequently the fibrous .packin 36, are located at the junction between t e spigot flange 31 and the abutment wall 24 of the conduit,

so that when the joint is made, the interior edge of the bell 'flange 27 of the pipe section 26 engages and compresses the packing '36, and thus efl'ectively seals the joint at that point against the entry of moisture from the exterior of the pipe.

The second ring 33 embedded in the spigot pipe end 26 is also of truncated double cone shape, but with the apices, in-

stead of the bases,.of the cones facing each other. -The embedded portion of the ring is similarly provided with anchoringmeans, such as perforations 37, while the other portion of the ring forms an interior-facing for the bell flange 27. The junction of the two sections is similarly provided with the crimp 38, located at the junction of the bell flange 27 and the end face 29,.while a similar packing 39 is arranged in the crimp at this i ration between the grout fill and point. It is thus seen that in the completed oint, the portions of the rings which on the one hand over-lie the'spigot flange 21 and face the interior ortion of the bell flange 27, over-lap eac other and afford the meeting faces of the spigot and bell elements of the joint. After the joint has been assembled, the projecting margin of a 'the ring 32, which lies at the bottom of the channel 31 at the interior face of the joint, is preferably sealed to the exposed portion of ring 33. If the rings'32 and 33 are formed of tin, the seal may be effected by soldering. If they are iron or steel, however, as I prefer, the joint is sealed by welding at 4 When the joint is subjected to strains incident to contraction of the pipe lengths, crimps 38fand are free to yield Without rupturing'the seal at 40, by reason of the presence of .the flexible packing 39 or 36, which while excluding cement from the area adjacent the crimps leaves the latter free to change contours under the strains to which the pipe is subject. It will be understood, of course, that after the seal 40 has been effected, the channel 31 is filled with outing. The latter adheres and makes T end with the projecting portion of the mesh 23, at the. end of the spigot, while the opposite face of the channel is painted with any suitable preparation which will revent the bonding of the grout therewith. 'onsequently when the joint opens, the sepathe spigot end 26, occurs adjacent the face of the channel provided with ribs 30 which afl'ord a long creepage surface, and thus aid in preventin access of the fluid to the seal at 40. In the-modification shownin Fig. 5, the exposed joint faces are substantially the same as those just described. I have indicated, however, reinforcing longitudinal bars 41 and 42 in the spigot end of the pipe, to which ring 32 is connected by welding at 43 and 44, While the meshes 22 and 23 are united by tie wires 45. The bell end is similarly reinforced by'longitudinal bars 46 and 47 to whichthe ring 33 is welded at '48, while the tie wires connect the mesh to these bars. The latter maybe also connected to each other by an suitable means such as tie wire 49, as indicated at the left hand end of the figure; This construction has the advantage of rigidly uniting and interconnecting the various metallic elements of the reinforce and joint so that the strains of expansion and construction are transmitted directly to the joint structure by the metal reinforce instead of through the interposed concrete, as in the censtruction first described.

In Figure 6, I have shown a modification of the structure particularly adapted for making theseal in a channel at the exterior Leas es insteadof the interior of the pipe. To this end the spigot flan e 50 of the pipe section 20 is extended su ciently to a -ut against the body of the bell end 26, while the bell flange 51 of the latter is shortened.- The exterior channel 52 is rovided to receive the grout fill. The sea ing ring 53 for the spigot end ofthe pipe is here shown as a plain cylinder and over-lies a similarly shgpled portion of the spigot flange 50. The In reinforce 22 and'23 is tied to the cylinder in any suitable way, as b innerends of tie wires 54. he ring 55 of the bell end of the joint has a cylindrical section embedded inthe pipe 26 and an outwardly flared conical portion 56 terminating in the crimp 57 and flan e 58. The latter over-lies the exposed en of the ring 53 and is welded or otherwise sealed thereto at 59. The flexible packing ring 60 may be arranged with the crimp 57 where it is compressed during the making of the joint. A similar packing rin 61 may be arranged in the channel 62 in t bell end pipe section 26 and is similarly compressed by'the face 63 at the end of the splgot flange. The packings 60 and 61 serve to exclude moisture from the inner face of the Joint at 59, and by reason of their flexiblenature, not only expand to keep the joint t ght while the sections se arate on contraction, but also permit the "unctioning of the crlmp 57 under the latter condition.

In Figure 7, a further modification is shown in which the bell and spigot flanges are so shaped as to aflord sealing channels 64 and 65 at both the exterior and inner portlonsof the joint. The reinforcing ring 53 for the spigot end of the pipe is identical with that shown in the previous construction, and its ex osed portion again over-lies the cylindrica portion of the spigot welding the e abutting face of the flange. The reinforci'n ring 66 for the bell,

formed, while the terminal flange 691 over-' "lies the end of the ring 53 of the spa 0t section, and is welded or otherwise sealed thereto at 70. The mesh reinforce 22 for the spigot end is welded at 71 to the ring 53, while the double'mesh reinforce 72 ex tending both inside and outside the ring 66 for the bell end is welded thereto at 73. In order to seal the inner channel 65, a packing ring 2'4 is positioned at the bottom of the channel before the joint is made, and is compressed by the end of the spigot flange as the pipes are drawn to ether. The packing ring '55 lying in the crimp 68, exeludes the grouting therefrom when the channel 64 is filled, and permits the crimp lac i The bell end 26 has embeddedtherein a ring reaches tions.

The adaption of this type of joint to -a sealin channel at the inner portion of the joint is indicated in Figure 8. Here the ring 76 is embedded in the spigot end. 20 of the pipe and-projects beyond the end face of the spigot flange 77, which is undercut and faced by portion of the ring 76,

78 with marginal crimp 79 adjacent the sealed joint 80, between it and the rojecting margin of the ring 77 The bel flange 81 has a terminal groove 82 to receive the packing'83 which is compressed in the completed joint, and, prevents moisture from creeping intothe seal from the exterior of the pipe. A-packing ring 84,. located in the. crimp 79, permits the latter to function.

In the modification shown in Figure 9, the spigot is provided with a ring 85 of truncated cone shape, which rests upon the outer face of the spigot flange- 86 and projects beyond the latter terminating in an inwardly off-set flange 87. The bell end is provided with an embedded ring, 88 with a terminal flange 89. oif-set to over-lie the end of the pi e at the side of the inner joint channel .90. e marginal crimp 91 extends toward and deflects the flange 87 of the ring 86 when the joint is made, thus bringingthe two portions into intimate contact which is supplemented by a welded joint between these flanges. The space 92 permits flexionof the flanges under va ing temper atureconditions withouta ten ency to ru ture the seal. The packing rings 93 at t e abutting surfaces 0 the bell flange. 94 and the body of .the spigot end 20 prevents leakage to the joint fromthe exterior of the pipe, while a second packing ring 95, spigot section 26 be ore the grouting is fille 1n channel 90, tends to maintain the joint tight at th parting face-as the joint opens.

The adaptation of this construction to an exterior joint channel is indicated in Figure 10, the corresponding points being similarly identified.-

In Figure 11 still another modification is shown; As here indicated, the bell and spi ot flanges are faced on their meeting an inclined surfaces by exposed or'tions of the embedded .frustro-conical rings 96 and .97', each provided with a crimp 98 to receive a packing ringlim. Bearing a ainst the crimps and hol g .the latter rmly' in position, are reinforcing bars 100 and 101, which hold the crimps so rigidly in, position that when the pipe'ends are'forced together, a very snug oint between the ends of the crim s the portions of the rings, 97 and 96}- against which they bear,is accomplished. This very materially of the spigot and decreasing the length of the bell, the channel will be formed at ed with grout. While an inner the outer portion of the joint, and will uncoverthe outer crimp'98, while the present channel 103 will be completely closed by the projecting spigot end.

Flgure 12 shows a construction substantially identical with that indicated in Figures 1 to 5 inclusive, but showing the doubled coned rings welded or otherwise suitably secured to metal shells 104 embedded in the respective spigot and pipe ends. A welded joint is indicated at 105, but itwill be readily understood that where more convenient, the parts may be riveted together or the ring formation may be made integral with the shell ends.

In Figure 13 the same adaptation of the joint shown in Figure 9 to a shell construction is indicated, thering formation being here disclosed as an integral continuation of the'shells 104.

In Fi re 14 the rings 106 and 107 have each a cable cone she as in Figure 1, but are with crimps 108. The embedded crimps form: an anchora e and are secured to the concrete pipe en s or to the shell or other reinforce, indicated same. As here shown,

rovidedat their opposite margins v the bell and spigot flange 110 and 111 respectively, are made very short and inner and outer-channels 112 and 113 respectively result. This makes it possible to seal the joint both outside and inside at 114. Packm'g rings 115 arranged in crimps 108 may be, provided, but are not necessary although they tend to maintain the joint tight should i I in the rings after thejoint has been made,- or by packing lead rings therein before the pipe sections are assembled. Should any isplacement of the crimps 116 and 117 occur during the assembling of the joint with lead rings in position, the joint may be properl c osed before sealing at 118, by suitable ca kin o rations. It will be recognized that in th Figures 14. and 15, the construction may be readily modified ascribed, aflord a single to aiford a single jomt chamber either exterior or interior to the joint.

It will, of course, be understood that whether or not the metal rings be carried the length of the conduit section as in certain of the constructions illustrated, the joint elements function in the same manner, and I contemplate such extension of the rings whenever it is desired to embody a metal shell throughout the length of the pipe. Nor, ofcourse, is it essential that the rings be integral with the shell in such case, since they may be joined together in any appropriate fashion to meet the needs of a particular installation, My claims are to be interpreted accordingly, to include any type of conduit body construction havingat the joint cooperatin elements embodying the invention speci ed. In all the constructions it is obvious that the metal ring may be mounted on or associated with the end form of the mold on which the conduit is cast, and that this element of the construction offers no obstacle or impediment to the formation of the conduit in the manner usually practiced in this art. Moreover, it will be recognized that. the ring elements are, in all of the various forms shown, readily fabricated either in the shop or in the field b .means of simple crimping or bending rol s adapted to operate on sheet metal.

Various other modifications will readily occur to those dealin with the problem, which 'do not depart rom what I claim as my invention. f

In the following claims I use the expression oppositely inclined to identify the outwardly flared bell end and the inwardly contracted spigot end elements of the jointforming rings, it being of course understood that the actual inclination of the opposed joint surfaces, with respect to the pi e axis, is substantially the same, and that t e outer peripheral surface of the spigot and the inner peripheral surface of the bell lie in juxtaposition in the completed joint.

I claim 1. A joint for concrete conduit sectlons comprising bell and spigot ends, and metallic ring elements each of ouble cone shape respectively anchored in the conduit ends, and having oppositely inclined exposed faces juxtaposed inthe finished joint.

joint for concrete conduit sections comprising bell and spigot ends, and metallic ring elements each of. double cone shape respectively anchored in the conduit ends, and having oppositely inclined exposed portions facing the bell and spigot surfaces of the respective ends.

3. A joint for concrete conduit sections comprising bell and spigot ends, and metallic ring elements respectively anchored in the conduit ends, and having oppositelyinclined exposed faces juxtaposed in the finished joint,.together with means uniting said faces to form a sealedjoint.

4. A joint for concrete conduit sections comprising bell and spigot ends, and metallic ring elements respectively anchored in the conduit ends, and having oppositely in clined exposed faces juxtaposed in the finished joint, together with a welded union between said faces to seal the joint.

5. A joint for concrete conduit sections comprising-bell and spigot ends and metallic ring elements respectively anchored in the conduit ends and having oppositely inclined exposed faces juxtaposed !in the finished joint, together with means uniting said faces to form a sealed joint, at least one of said ring elements having a portion yieldable under longitudinal strain at the joint to permitrelative movement of the conduit section without rupture of the joint.

'6. A joint for concrete conduit sections comprising bell and spigot ends, and metallic ring elements respectively anchored in the conduit'ends, and having oppositely inclined exposed faces juxtaposed in the finished joint, together with means uniting said faces to form a sealed joint, at least one of said ring elements having a crimp therein topermit movement without rupture of the oint. V

7. A joint for concrete conduit sections comprising bell and spigot ends, and metallic ring elements respectively anchored in the conduit ends, and having 0 positely inclined exposed faces juxtaposed in the finished joint, together with means uniting said faces to form a sealed joint, at least one of said ring elements having a crimp therein to permit movement without rupture of the joint, and deformable packing means at said crimp.

8. A 'oint for concrete conduit sections comprising bell and' spigot ends, and metallic ring elements respectively anchored in the conduit'ends, and having oppositely inclined exposed faces juxtaposed in the finished joint, to gether with means uniting said faces to form a sealed joint, said rings having oppositely faced crimps to permit movement without rupture at the joint.

9. A jointfor concrete conduit sections comprising bell and spigot ends, and metallic ring elements respectively anchored n the conduit ends, and having oppositely inclined exposed faces juxtaposed in the finished joint, together with means uniting said faces to form a' sealed joint, said rin s having oppositely faced cr mps to permit movement without rupture a the joint, and deformable packing means at said crimps.

10. A joint for concrete conduit sections comprising bell and spigot ends and metallic ring elements res ectively anchored in the conduit ends and aving oppositely inclined exposed faces juxtaposed in the finished joint, together with means uniting said faces to form a sealed joint, at least one of said ring elements having a crimp therein to permit longitudinal displacement of the joint was es members in opposite directions without rupture of the joint, in combination with packing means to prevent leakage between adjacent joint surfaces to the metallic elements.

11. A joint for concrete conduit sections comprising bell and spigot ends, and metallic ring elements of double frustro-conical shape respectively anchored in. the conduit ends and having oppositely inclined exposed faces juxtaposed in the finished 'oint.

J 12. A joint for concrete conduit sections comprising bell and spigot ends, and metallic ring elements of double frustro-conical shape respectively anchored in the conduit ends and having oppositelyinclined exposed faces juxtaposed in the finished joint, said exposed faces being supported by the bell anal spigot flanges of the respective conduit en s.

13. A joint for concrete conduit sections comprising bell and spigot ends, and metallic ring elements of double frustro-conical shape respectively anchored in the conduit ends and having oppositelyinclined exposed faces juxtaposed in the finished joint, and having a crimp in the exposed areas thereof.

1.4. A joint for concrete conduit sections comprising bell and spigot ends, and metallic ring elements of doubte frustroconical shape respectively anchored in the conduit ends and having oppositely inclined exposed I said rings being off-set to form an expansion for the joint, together with reinforcing elements embedded in the conduit and in direct cooperating association with said rings.

16. Ajoint for concrete conduit sections, comprising bell and spigot ends, joint-forming sheet metal rings embedded in the conduit but exposed at said ends, at least one ofsaid rings being off-set to form an expansion element for the joint, together with reinforcing elements embedded in the conduit and means connecting said rings and reenforcing element directly together to insure their cooperation. V

17 A joint for concrete conduit sections comprising bell and spigot ends, j oint-forming sheet metal rings embedded in the conduit sections but exposed at said ends, at least one of said rings having its exposed joint area supported by the hell or spigot forming flange of said conduit ends, and means for uniting said rings to seal the joint.

In testimony whereof I have signed my name to this specification.

EARL L. PETERSON. 

